The modern Jeep Wrangler body style was first introduced in 2007, and this updated platform revitalized the brand. Jeep has long had a loyal, hard-core following among off-roaders and outdoor enthusiasts, but with the introduction of the four-door Wrangler, code named JK for the current Wrangler body style, the truck went from being a fun weekend vehicle to an SUV capable of fitting the whole family.